Colecciones nacionales e internacionales de patentes

1. (WO2003001531) PROPORTIONAL TO TEMPERATURE VOLTAGE GENERATOR

Pub. No.:    WO/2003/001531    International Application No.:    PCT/US2002/019546
Publication Date: Sat Jan 04 00:59:59 CET 2003 International Filing Date: Fri Jun 21 01:59:59 CEST 2002
IPC: G11C 5/14
G11C 7/14
Applicants: CYPRESS SEMICONDUCTOR CORP.
Inventors: FISCUS, Timothy, E.
Title: PROPORTIONAL TO TEMPERATURE VOLTAGE GENERATOR
Abstract:
A biasing circuit (100) comprising a first circuit (102) and a second circuit (104). The first circuit may be configured to generate a first bias signal (VBIAS) and a second bias signal (VREF). The second bias signal may be defined by a threshold voltage (118) and a first resistance (R). The second circuit may be configured to generate a third bias signal (PCTR) in response to the first and the second bias signals and a second resistance (R1). The third bias signal may have a magnitude that is linearly proportional to absolute temperature (PTAT) and be configured to vary a refresh rate of a memory cell in response to changes in temperature.